The title will be a collaborative effort between Ready at Dawn, who developed God of War: Chains of Olympus, and Sony Computer Entertainment's Santa Monica Studio.

"Excitement for the God of War franchise is at an all-time high and we're thrilled to continue that momentum with God of War: Ghost of Sparta," said Scott A. Steinberg, vice president, product marketing, SCEA. "This new adventure will showcase Kratos on PSP like never before in an experience that fans and newcomers can enjoy on the go, anytime, anywhere."

Set in the realm of Greek mythology, God of War: Ghost of Sparta is a single-player game that has players once more taking on the role of Spartan warrior Kratos. This new adventure picks up after the original God of War concludes, telling the story of Kratos' ascension to power as the God of War. In his quest to rid himself of the nightmares that haunt him, Kratos must embark on a journey that will reveal the origins of lost worlds, and finally answer long-awaited questions about his tattoo, scar and family. Armed with the deadly chained Blades of Chaos, he will have to overcome armies of mythological monsters, legions of undead soldiers, and amazingly dangerous and brutal landscapes throughout his merciless quest.

The developers say they have "made significant strides to give players a realistic feel that has never been seen before on PSP or any other portable platform." The game showcases higher quality environments and characters, giving an unmistakable realism to Kratos' newest quest, they say.

The game will have more than 25 percent more gameplay than God of War: Chains of Olympus, according to the release.

The game will also have a new weapon system, new magical powers, weapons and navigational abilities, many more enemies on screen, and a greater number of boss encounters, truly bringing the experience to life, all while on the go.